#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.ComponentModel.Composition;
using System.Diagnostics;
using octalforty.Componento.Shared.SemanticModel;

namespace octalforty.Componento.ComponentModel.Installation.Svn
{
    [ComponentManifestProvider()]
    public class SvnManifestProvider : IComponentManifestProvider
    {
        #region Private Fields
        private ISvnClientService svnClient;
        #endregion

        #region Public Properties
        /// <summary>
        /// Gets or sets a reference to the <see cref="ISvnClientService"/>.
        /// </summary>
        [Import()]
        public ISvnClientService SvnClient
        {
            [DebuggerStepThrough]
            get { return svnClient; }
            [DebuggerStepThrough]
            set { svnClient = value; }
        }
        #endregion

        #region Implementation of IComponentManifestProvider
        /// <summary>
        /// Verifies whether current <see cref="IComponentManifestProvider"/> can retrieve manifest from <paramref name="uri"/>.
        /// </summary>
        /// <param name="uri"></param>
        /// <returns></returns>
        public bool CanProvideManifestFrom(Uri uri)
        {
            return SvnUriUtil.IsValidSvnUri(uri);
        }

        /// <summary>
        /// Retrieves <see cref="ComponentManifest"/> from <paramref name="uri"/> for package <paramref name="componentName"/> with
        /// version requirement <paramref name="versionSpecification"/>.
        /// </summary>
        /// <param name="uri"></param>
        /// <param name="componentName"></param>
        /// <param name="versionSpecification"></param>
        /// <returns></returns>
        public ComponentManifest GetComponentManifest(string componentName, Uri uri, VersionSpecification versionSpecification)
        {
            SvnRepositoryInfo repositoryInfo = SvnClient.GetRepositoryInfo(GetResourceUri(uri));
            return new ComponentManifest(componentName, new Version(0, 0, 0, repositoryInfo.HeadRevision), true, 
                new Resource(uri));
        }
        #endregion

        private static Uri GetResourceUri(Uri resourceUri)
        {
            if(resourceUri.Scheme.ToLowerInvariant() == "svn+http")
                return new Uri(resourceUri.OriginalString.Replace("svn+http", "http"));

            if(resourceUri.Scheme.ToLowerInvariant() == "svn+https")
                return new Uri(resourceUri.OriginalString.Replace("svn+https", "https"));

            return resourceUri;
        }
    }
}